Which county in West Virginia is known for its historic coal mining industry?

McDowell County is recognized for its significant historical connection to the coal mining industry. During the peak of coal production in West Virginia, McDowell County was one of the leading coal producers in the state. Its extensive coal fields and numerous mining operations played a crucial role in the local economy and the broader industrial growth of the region during the late 19th and early 20th centuries. The county's history is deeply intertwined with the coal mining boom, and it serves as a testament to the challenges and successes associated with this industry.

The other counties mentioned have different economic focuses or historical significance that do not primarily center around coal mining. For example, Kanawha County, while having coal mining activity, is more prominently known for its role in the state's government and industry development. Mason County has historical ties to agriculture and other industries rather than solely coal. Preston County's economic history is also varied, with a focus on agriculture and tourism as opposed to being defined by coal mining, like McDowell County.